LPS-45069 Replace int parameters  with strings for language taglib displayStyles

Include backwards compatibility for int parameters
LPS-45069 Upgrade process
LPS-45069 Refactor language taglib display styles

Apply same pattern as in breadcrumb taglib
LPS-45069 Support ADT in Language Portlet - Handler
LPS-45069 Support ADT in Language Portlet - Permissions
LPS-45069 Support ADT in Language Portlet - Configuration
LPS-45069 Support ADT in Language Portlet - View
LPS-45069 Support ADT in Language Portlet - Help
LPS-45069 Support ADT in Language Portlet - Sample